Finding the Fourth Proportional to 7,522.28, 10,380.72 and 4,210.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,522.28 : 10,380.72 = 4,210.28 : x
2. Step 2: Convert to fraction form
   7,522.28/10,380.72 = 4,210.28/x
3. Step 3: Cross multiply
   7,522.28x = 10,380.72 × 4,210.28
4. Step 4: Simplify right side
   7,522.28x = 43,705,737.80
5. Step 5: Solve for x
   x = 43,705,737.80/7,522.28
6. Step 6: Final answer
   x = 5,810.17